66820780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257003}}^1$

素因数の和:257025

約数の個数: 24

約数和(自身を含む): 151118352

約数和(自身を除く): 84297572

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 257003, 514006, 1028012, 1285015, 2570030, 3341039, 5140060, 6682078, 13364156, 16705195, 33410390, 66820780]

約数ペア:

[(1, 66820780), (2, 33410390), (4, 16705195), (5, 13364156), (10, 6682078), (13, 5140060), (20, 3341039), (26, 2570030), (52, 1285015), (65, 1028012), (130, 514006), (260, 257003)]